<!--jsr 303--><dependency><groupId>javax.validation</groupId><artifactId>validation-api</artifactId><version>1.1.0.Final</version></dependency><!-- hibernate validator--><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-validator</artifactId><version>5.2.0.Final</version></dependency>

public class Book {private long id;/*** 书名*/@NotEmpty(message = "书名不能为空")private String bookName;/*** ISBN号*/@NotNull(message = "ISBN号不能为空")private String bookIsbn;/*** 单价*/@DecimalMin(value = "0.1",message = "单价最低为0.1")private double price; // getter setter .......  }

 /*** 添加Book对象* @param book*/@RequestMapping(value = "/book", method = RequestMethod.POST)public void addBook(@RequestBody @Valid Book book) {System.out.println(book.toString());}

package com.beiyan.validate.annotation;import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.RUNTIME;/*** 自定义参数校验注解* 校验 List 集合中是否有null 元素*/@Target({ElementType.ANNOTATION_TYPE, ElementType.METHOD, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Constraint(validatedBy = ListNotHasNullValidatorImpl.class)此处指定了注解的实现类为ListNotHasNullValidatorImplpublic @interface ListNotHasNull {/*** 添加value属性，可以作为校验时的条件,若不需要，可去掉此处定义*/int value() default 0;String message() default "List集合中不能含有null元素";Class<?>[] groups() default {};Class<? extends Payload>[] payload() default {};/*** 定义List，为了让Bean的一个属性上可以添加多套规则*/@Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER})@Retention(RUNTIME)@Documented@interface List {ListNotHasNull[] value();}
}

package com.beiyan.validate.annotation;import org.springframework.stereotype.Service;import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.List;/*** 自定义注解ListNotHasNull 的实现类* 用于判断List集合中是否含有null元素*/@Service
public class ListNotHasNullValidatorImpl implements ConstraintValidator<ListNotHasNull, List> {private int value;@Overridepublic void initialize(ListNotHasNull constraintAnnotation) {//传入value 值，可以在校验中使用this.value = constraintAnnotation.value();}public boolean isValid(List list, ConstraintValidatorContext constraintValidatorContext) {for (Object object : list) {if (object == null) {//如果List集合中含有Null元素，校验失败return false;}}return true;}}

public class User {

    //其他参数 ......./*** 所拥有的书籍列表*/@NotEmpty(message = "所拥有书籍不能为空")@ListNotHasNull(message = "List 中不能含有null元素")@Validprivate List<Book> books;//getter setter 方法.......
}

/*** 可以在一个Model上面添加多套参数验证规则，此接口定义添加Person模型新增时的参数校验规则*/
public interface PersonAddView {
}/*** 可以在一个Model上面添加多套参数验证规则，此接口定义添加Person模型修改时的参数校验规则*/
public interface PersonModifyView {
}

public class Person {private long id;/*** 添加groups 属性，说明只在特定的验证规则里面起作用，不加则表示在使用Deafault规则时起作用*/@NotNull(groups = {PersonAddView.class, PersonModifyView.class}, message = "添加、修改用户时名字不能为空", payload = ValidateErrorLevel.Info.class)@ListNotHasNull.List({@ListNotHasNull(groups = {PersonAddView.class}, message = "添加上Name不能为空"),@ListNotHasNull(groups = {PersonModifyView.class}, message = "修改时Name不能为空")})private String name;@NotNull(groups = {PersonAddView.class}, message = "添加用户时地址不能为空")private String address;@Min(value = 18, groups = {PersonAddView.class}, message = "姓名不能低于18岁")@Max(value = 30, groups = {PersonModifyView.class}, message = "姓名不能超过30岁")private int age;//getter setter 方法......
}

  /*** 添加一个Person对象* 此处启用PersonAddView 这个验证规则* 备注：此处@Validated(PersonAddView.class) 表示使用PersonAndView这套校验规则，若使用@Valid 则表示使用默认校验规则，* 若两个规则同时加上去，则只有第一套起作用*/@RequestMapping(value = "/person", method = RequestMethod.POST)public void addPerson(@RequestBody @Validated({PersonAddView.class, Default.class}) Person person) {System.out.println(person.toString());}/*** 修改Person对象* 此处启用PersonModifyView 这个验证规则*/@RequestMapping(value = "/person", method = RequestMethod.PUT)public void modifyPerson(@RequestBody @Validated(value = {PersonModifyView.class}) Person person) {System.out.println(person.toString());}

@Beanpublic MethodValidationPostProcessor methodValidationPostProcessor() {return new MethodValidationPostProcessor();}

@RestController
@Validated
public class ValidateController {
}

  @RequestMapping(value = "/test", method = RequestMethod.GET)public String paramCheck(@Length(min = 10) @RequestParam String name) {System.out.println(name);return null;}

{"timestamp": 1476108200558,"status": 500,"error": "Internal Server Error","exception": "javax.validation.ConstraintViolationException","message": "No message available","path": "/test"
}